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From: Dmitry Antipov <daantipov@gmail.com>
To: Jiri Kosina <jikos@kernel.org>,
	Benjamin Tissoires <benjamin.tissoires@redhat.com>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Rob Herring <robh+dt@kernel.org>, Mark Brown <broonie@kernel.org>,
	Felipe Balbi <balbi@kernel.org>
Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org,
	linux-spi@vger.kernel.org, Dmitry Antipov <dmanti@microsoft.com>
Subject: [PATCH v4 0/6] Add spi-hid, transport for HID over SPI bus
Date: Thu, 24 Feb 2022 16:59:30 -0800	[thread overview]
Message-ID: <20220225005936.3485405-1-dmanti@microsoft.com> (raw)

Surface Duo devices use a touch digitizer that communicates to the main
SoC via SPI and presents itself as a HID device. This patch's goal is to
add the spi-hid transport driver to drivers/hid. The driver follows the
publically available HID Over SPI Protocol Specification version 1.0.

The specification is available at
https://www.microsoft.com/en-us/download/details.aspx?id=103325.

In the initial commits there are some HID core changes to support a SPI
device, a change to HID documentation, HID over SPI Device Tree
bindings, and finally the SPI HID transport driver.

Dmitry Antipov (6):
  HID: Add BUS_SPI support when printing out device info in
    hid_connect()
  HID: define HID_SPI_DEVICE macro in hid.h
  Documentation: DT bindings for Microsoft G6 Touch Digitizer
  Documentation: Correction in HID output_report callback description.
  HID: add spi-hid, transport driver for HID over SPI bus
  Defconfig: add CONFIG_SPI_HID=m

 .../input/microsoft,g6-touch-digitizer.yaml   |  105 ++
 Documentation/hid/hid-transport.rst           |    4 +-
 arch/arm64/configs/defconfig                  |    1 +
 drivers/hid/Kconfig                           |    2 +
 drivers/hid/Makefile                          |    1 +
 drivers/hid/hid-core.c                        |    3 +
 drivers/hid/spi-hid/Kconfig                   |   25 +
 drivers/hid/spi-hid/Makefile                  |   12 +
 drivers/hid/spi-hid/spi-hid-core.c            | 1326 +++++++++++++++++
 drivers/hid/spi-hid/spi-hid-core.h            |  188 +++
 drivers/hid/spi-hid/spi-hid-of.c              |  141 ++
 drivers/hid/spi-hid/spi-hid-of.h              |   30 +
 drivers/hid/spi-hid/spi-hid_trace.h           |  194 +++
 drivers/hid/spi-hid/trace.c                   |    9 +
 include/linux/hid.h                           |    2 +
 15 files changed, 2041 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/input/microsoft,g6-touch-digitizer.yaml
 create mode 100644 drivers/hid/spi-hid/Kconfig
 create mode 100644 drivers/hid/spi-hid/Makefile
 create mode 100644 drivers/hid/spi-hid/spi-hid-core.c
 create mode 100644 drivers/hid/spi-hid/spi-hid-core.h
 create mode 100644 drivers/hid/spi-hid/spi-hid-of.c
 create mode 100644 drivers/hid/spi-hid/spi-hid-of.h
 create mode 100644 drivers/hid/spi-hid/spi-hid_trace.h
 create mode 100644 drivers/hid/spi-hid/trace.c

-- 
2.25.1


             reply	other threads:[~2022-02-25  0:59 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-25  0:59 Dmitry Antipov [this message]
2022-02-25  0:59 ` [PATCH v4 1/6] HID: Add BUS_SPI support when printing out device info in hid_connect() Dmitry Antipov
2022-02-25  0:59 ` [PATCH v4 2/6] HID: define HID_SPI_DEVICE macro in hid.h Dmitry Antipov
2022-02-25  0:59 ` [PATCH v4 3/6] Documentation: DT bindings for Microsoft G6 Touch Digitizer Dmitry Antipov
2022-02-25 14:16   ` Rob Herring
2022-02-25 14:58   ` Rob Herring
2022-02-25  0:59 ` [PATCH v4 4/6] Documentation: Correction in HID output_report callback description Dmitry Antipov
2022-02-25  0:59 ` [PATCH v4 5/6] HID: add spi-hid, transport driver for HID over SPI bus Dmitry Antipov
2022-02-25  0:59 ` [PATCH v4 6/6] Defconfig: add CONFIG_SPI_HID=m Dmitry Antipov

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